In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].

This is the moment a camerman on the job became the object of affection for one very flirtatious horse. Greg Harriott was in Santiago, Chile filming an episode for ABC's show Born To Explore With Richard Wiese when he caught the eye of a horse named Chunchun. Richard Wiese was interviewing horse breeder Gonzalo Vial, and Greg was filming from the front of Chunchun's stall in the stable when the horse tried to get affectionate. Chunchun seems peaceful for a second as Richard pets a different horse and tells Gonzalo 'Typically, when I meet a horse, it's not so calm like this. It's a very gentle horse.'Greg Harriott was in Santiago, Chile filming an episode of ABC show Born To Explore With Richard WieseHe caught the attention of Chunchun, who couldn't keep its mouth off himThe Emmy award-winning cameraman was a pro and kept filming through Chunchun's advancesBut at one moment he winces in pain and mouths 'Ow' when the horse's pecks become a bit too aggressive 
 Question:That's doesn't deter _, who starts playing with Greg's collar, biting it and pulling him back before returning to nibbling his ear.
Chunchun